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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '84e40c2f9707c75d8aa9aa88c5303ece686566b44a024ece15bf2c108f667ef4' 
  AND token = 'djysFezlb67rAwlai79up619uwaD+S5O39Hn/JYLfYs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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