Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e7a09ebac933bd3980cc5d400c1ba471865f3a5c31464d58777a45919e841e48' 
  AND token = 'oyaWKR37viQuuwjTJlTPYY/tyBL9fDT2aN4Rh8UUSyE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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