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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0222880e1484e1057ef7643778e6c801a0088a9060a9eea458989fff2dbc3768' 
  AND token = 'jffGzQlBWqbBL5RtlW6Zok/Maca7mukux7rJO7u3vP8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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