SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dde0383927b300812b2f9a6117322fb9554663655a085162c19344eace463930' 
  AND token = 'AIFqrpuPVPaHzLMZ9oCRg7qVst2IjzeoUx0/lHfJIQQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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