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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9354649137320072fc8be095fa2181c876575962c8eb6a6e3e94887d2319249f' 
  AND token = 'jm9OU1t/BLN9kjoDbR0HeXTU4JeEi6HxPBF/gC9X/GQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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