Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8592819d05c2b9595183ea878dd737815a83677bd1afa009a4b6b113a53833cf' 
  AND token = 'NNdEOI3S6uYkFfuly3r3QOa8o6KA6xtj0wcPoTEo2Wc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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