Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b733972be03fd918d8f1e6c4332e95544905288d2987121d0c299a7f3b0e3243' 
  AND token = 'NF5NmFbk7smEpoBC/PZzz0mWl6snjCWZzw6nzg+NF4w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00089

JSON explain

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