Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7b021c23adc8b3e39d68fec21de6aad095322f7a5d24d2a6ced9afeacdccc3d1' 
  AND token = 'Y2L7vMjad6fyd4evSu9Z6ktRL4m3chAZx/bSevuGv14=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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