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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd84a4c381ebd11aef5ef9eaae4a8037ffd9b8d55d7bbddc09f9efa1eb6a2f059' 
  AND token = 'FaYRGKpIYBnuGGlhb4llQdiQRZ0rpSpmGUNKrYHbQq4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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