Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a313b1eb124e07a394f6074d554ccac9c0744a4d57f9ccc343b4f2243617fa49' 
  AND token = 'Gvo88kc+G00fhsnMhih2SJ9Re7ZywOs0YSexBRKx+wk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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