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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f68105402225dc65dc50a1a2dbcd2c0506b9d7a2179581b53bb80e17413bff39' 
  AND token = 'P1CyNSJwkJGgSHA7UlqU11XXL29r/KRJvmwUHeU+LyI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00069

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}