Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a067678024ce42c4dd09fb25844ad0081f6e0e0c8ad75951f30631b39427904d' 
  AND token = 'UacgxtpoEWiHpv8+MV9E3uh7KBDQU7dXf8y0H5Tcxd0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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