Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6ab2c9467c00994e34ea5daa727b950d99ec2fda3a5ce5d6716430c4f1711987' 
  AND token = '4r+dPh1qr9Cpz4ArXarQws1I+VT5EQVXbzyYZSPp3Ow=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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