Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '466d5127809183149814cb67892d5e9888affc6009fee831443793ebb86bbd48' 
  AND token = 'Pt0iA2rl1g5zIh4rvXGpEFtHGXt+z88Vv0Yn0OBhGYs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00063

JSON explain

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