Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fcfd92b9654c4dd80905f2e084b95b4341c23b7298ab3953b95cf28befb115a2' 
  AND token = 'fTWHaXlBrs5/4J/LaxMXjazcWH4uLlXNsrKHol5rsHw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}