Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f99c07db7c2f195bdfcc8d49c115d2c39fa0b678105201b52d866cbfc352879d' 
  AND token = '7wQ3EyBTnpIOHVH2nUOTJwvgXBo3gW5loXwycISFUuw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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