Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6466a267ebc0348762073414d52c3b3396dce245c527996308f51e17ad9d813e' 
  AND token = 'McL2t8ugDjq+sLU1Wj0hXuaweehHZ71830p8Hk+Bzfk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}