Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b292bfd94d0e30392e7d8cc62345b6c414e6cf111e5c350c9b6556f86b8181cf' 
  AND token = 'vLmisv7zFalIS+0WWoIbdWSZotlAiHi2g1AE1VelsrA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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