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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '4b1c9b8d1b86e77114eb3eaa1e0713be38a20a1ed73a1e4f4fc20e2b82ed67c3' 
  AND token = 'vNHSAYsAEJlnsl1gUPsbYrlEdlgoUghyt8cmbMtwbDM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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