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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a8e8948a2f876d2f4f6722daf52418c6cf7b9ae2c0d6667a8b096c90b2a9184e' 
  AND token = 'aojPvn2QioLgfycw7NO2DpzXsacI/uMymNO1olSYybY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00073

JSON explain

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