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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '05ead2f72b4ecc5ff973d000d9245b266def225950b82790169d4547142e5b79' 
  AND token = 'BhOzSR/uLej5uJxl4+4biKwZ8RJz4y7ajBeWv3NW0S0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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