Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b40ebe55b6112b8f242910920991bcb6180dac4592011894b72324cfb5085c11' 
  AND token = 'ILVZbL//S7O9JH7WkBr7I9PJCqCnHT1e2GXXXo89IZE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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