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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '013a7bb03ee297cff48c065b9f910c15cb63a392e30fbdbed8a67d7e72fe0d61' 
  AND token = 'Ocgx2VQF37fmylY4t6QHjD8sH/klqT700R32YQbISFc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00100

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}