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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '7de105d324b24b089466446a462ffd7dab13ce4068b67478bba87369c4368360' 
  AND token = '0mzPRZ/if6B2Y14AdPMwskPA2U6lqQU0DlmnbpYIrDc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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