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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7ae1ecda82870748c0e4f1b11b56e1455ab80be5360fb0d6a56984b67a1a2fc0' 
  AND token = 'ggG1QdtP14Efhzm7UFIZhMEUiotVSn2xlAzM9mi1uj8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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