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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '099b105ee1d288143418aba67b20409164bf6a52e50b0aecffc3e2b8d0cd5f66' 
  AND token = 'Q13mSRj8WSVHVg5hFHxMXni/97B8BmEn2b4fhzf7Vi4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00009

JSON explain

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