Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aca21604a35ff469f9a43869b319e2e8c18badd58d10a8f6ffd812f15c80f0d8' 
  AND token = 'PSA0o99Wn2whstHXHdwJz1CnyT5V0mYc7h5JtPoVbyE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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