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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '80eddded267a1b8a14eb1caef3faffeb02f93f474bc11b9ac6f85466994a9665' 
  AND token = 'ITgRPyP4Nots2bkQQbzXMGaWHC0l54VVlwEnaPsUwuI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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