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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e45595b71d6efd7e47425dc8db5fff3cdecfa7ec22bdf8ac67762ffb3da9eca7' 
  AND token = 'cdjNeOutcRPUNI1B5E4VKOUWw4L4/BvZDreaooCvk3c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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