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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '5f1bae106fb97114b992ee3ed0d61de277d51f6fbe4698427d006d4dfb4e5394' 
  AND token = 'FUoqdn6m34jSgkiLzWXJgKAasr5Rij8lN3NM7BlOeVU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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