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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ff46ffc8ab8c89de99fb3e3a7191926ffce8ce3b41336549d4556619a9dd25b4' 
  AND token = 'GT92JaaB5C3WlvVnz3/DnDrtNSKMQcJTWa43ZSlWkAM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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