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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '5034acdfbc535757408ea66ac7d17cbff1a4425d809fc98acb4b19cf68fe9d7a' 
  AND token = 'LQlp9zrn34NmkA3YMTvj0E5++9vi+diokzPTFTFHbT4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00061

JSON explain

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