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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '84d189080aa1a78b3ae8983ef7ae5a8b353e375da3041b18c21bf4f524e7b186' 
  AND token = 'kEw2opXZ8im1zbhxiorh6zoT5wpUrQOBaxB7ps0zDuc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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