SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'eeb1ab2f38bac271afc829843d2560059b768ca416f1b27ff06c6689d44576a4' 
  AND token = 'rMWrKhQ/vGHiUtfNc4KLkUiz29e9mJ4UZBAwVb/JHTY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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