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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '362987e789a8e6d8307baa97627949dc286aff5865dedfd894a2c713927cc087' 
  AND token = 'lPBDWq81EsxxetoW5fnxV8HuqbB3eS/2ALYfbaP1q2E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00011

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}