Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2fa035b4451be5a563b2279e87037fb477801c5e924fbabddb86aed2bace7591' 
  AND token = 'tkWHwlc9k/pPZln041bwZ6edv9pbbxjNNTg4ohyS5TM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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