SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '77e26a8b0b032a61844d773f003d05ee39202c029f36fde9ea50e9f4f307e82f' 
  AND token = 'yPwhEAQyniekMv+KKB/PxBeMMnZql/J2fj1XNzCq17o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00056

JSON explain

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