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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '01ea0fef8695f87f96450d5522436b69bf0816459103c6b638aa400fb8e55ed7' 
  AND token = 'XNhMypi8k/k1bs9j8l7OTAZ5dxML0NtVbYcqkB1ELaQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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