Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '30ee5f4e1ae436cbc5c387776c745a65ae0b1012c36880323d523dde7b496066' 
  AND token = 'B+2j7fivg0FGScYo8VYvW5lVPLfdqnXLBJBD1qst3Qo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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