Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '618183555424322bc1fc8ea1e0adf260c49b3e578497c62c13dcffdf4010d194' 
  AND token = 'R1JyAhlE8zN26ZlvW6tVj1Aq5pyguC4a1hpM5d+IPV4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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