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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bd47f0404fb084064c26f5d842693aa6abe9f5adedcf6826970798e8ee92215a' 
  AND token = 'BeXFApG9CVcx17qnDkbd9/2tskzrDlKhsJQXT7AfzzU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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