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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '7ef347e51b45d2d96c0c34b5ad7dfa202459778ed44d9b9b09c2a1d51775cc67' 
  AND token = 'aDNkQDnRIKg7III2gRO1A+URe5eCxm3Z/DVYqc7EwTU=' 
  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"
    }
  }
}