Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e989d260d1801573437715a2898ddd6c05197b9ab4403394767a45dbd4875d6c' 
  AND token = 'dXm3Uu/iBND7pajJAFY1naVllb32Mqjj0k0OL2nyQWg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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