Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7d8a3f564c43ebd29711add66764a0157d9b0a3137ac103eb4914b74e7b2b160' 
  AND token = 'x4Gr123zgrUEcarVPNHbQPi6lZU9CuZ81zWedaGCKmk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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