Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f23603e327a209f8226db576e8985f299fdbb135a110fb8285a7273b9d41631c' 
  AND token = 'X86AF6ScxEYWSXlTgjf+BeVFg+2qYc7/L7IRjx0lP6U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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