Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0c2988f2c393b4047aae46eda7f897462ec3f9ef1bc053d82da9853af7fd42ad' 
  AND token = 'wTSEAB6e9WmMkhJCzUkB0W63hxmrwzmKKrNM51nf47s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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