Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '63c2449aaa547ae3d45f3366b3d56a409d0b68b641540e9e8642e4fdd4719811' 
  AND token = 'JcJEN4b+VrEXPUBd3nvyFVKfK4fb3agf6CzVaw1Wzbc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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