Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '882a31ad4d0212a331a3580a265aa2c9d474fc929307b9a95e48433dd250b9dc' 
  AND token = 'dHXZjQVTzXYvKMG45zb4AW2tOGGdMoMdrd0ucH+htcM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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