Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '365f54821544b79ee0b23403c1d5972354a24e179c00822c0f9092523fe3fa11' 
  AND token = 'QNJbxeqKRCf1xjQsf7EmG60GT0eSWu+taq0XpX8CXv0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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