Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0673720247d6dcb2a734f936d8cd19e841bbb586f8d6b05f320790567c5ce738' 
  AND token = 'SCDpNTHh9Wa4aMrYjHV9u0GZ3FJQX5sx4STd3Dgc7Is=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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