Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '720d892faedf07829d142628378c3df7e0d4983c8c2281a8b4402f8827b47bd2' 
  AND token = 'Y6zcHrg43EUnjPNlrEGsQSD+c87BGT9DIZb+HG7qeWE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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