Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0b0d296af9e4facd98322745aafdbadacff95b03d786013c97ea7437abc19212' 
  AND token = 'zyA/wkRoq7W7uXuo0ktQ+2dgdmEUtMaOevsTR2x3kps=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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