Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9dbf71f0f92006d94a4088f6f9af2e6b4d8cdf6ff3ad26682a24f4e4cc645330' 
  AND token = 'm7NADEq4JHliQV0U4YvIEoxOFyh8531vomVzsSxX73I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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