Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fccec53c4ba7798f9badae1c52eff1c55e355b32849ac5ddb92bac1dea13710a' 
  AND token = 'Zy9DIM+5OuC/EinuC0YWrXfE/pd2WrLceJSJdv1D8Bs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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