Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '352a755258adbf3c6e1d82cc8db5e09c74f9c5fb0a0f80221ecef245a89a723b' 
  AND token = 'Iz2SLRKNXpjoYGstL6chSMC/KSPALp7ZsHdyaOg3zSI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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