SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '565abe005d401c6d1c94d6841d783aa5d0a2406cbd22163fb78e6178e602b501' 
  AND token = 'jWvPqyFbD2kgF6Y4oxXKf9OnnKYjoMCq2g/GBCVfoGQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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