Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b38e4866639a4100d7f1d10e938f4ef74f3cb5e9af8ba49a6a7fd6d067d282ea' 
  AND token = '8fTqR2B++aOHkCZE8VDbGr446fHRy2CYVZCUhuoyRxw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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