Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a725e7b5aba9d5fbb7b668ef6f9a961a94bd2bf98b86decc23d5fd9cfc98e8bd' 
  AND token = 'HVxPmcWm4UPGnB5s5ZP/Twccm6Ewq3vlQTTWtws1VEc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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