Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aa1e4e72e818ce8ec58330ab4928712a0bbc2d7838e609710fc389aadab64c3b' 
  AND token = '8UZomho/uqhKo7FF5BGM/76bWrJ+inTToGFkK4uvCcg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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