Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '64de830622fa228f8e369d871f256db2cd0af4881bc002e1633d305eff87884c' 
  AND token = 'Pi0pkftUdNby6bb8g6bOL8A1o7d0dX4FpOuaMsINFDY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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